Accessory for use with telephones



April 29, 1952 s. c. CHESICK ACCESSORY FOR USE WITH TELEPHONES 2 SHEETS-SHEET 1 Filed July 3, 1948 m INVENTOR SANFORD c. CHES/CK A T TORNEV April 29, 1952 s. c. CHESICK ACCESSORY FOR USE WITH TELEPHONES 2 SHEETS-SHEET 2 Filed July 5, 1948 'IIII lxxxna l6. 6 r Z6 mnn.

IT'III v INVE N TOR SANFORD C. CHES/CK Br xl- 7 a7 ATTORNEY Patented Apr. 29, 1 952 UNITED STATES r 13 Claims.

The invention relates to an accessory for use with a telephone, and more particularly to such an accessory adapted for holding the combined transmitter and receiver in aconvenientposition for use',.thus leaving both hands of the user free for other purposes.

One of the objects of thejinvention is to provide an accessory of the class described, having advantageou's means for detachably connecting the main portion of the attachment with a supporting platform.

Another object of the. invention is toprovide an aecessor'y as described having novel and advantage'ous manually operable means for moving the switch button on the telephone base to close or open the telephone circuit.

Stillanother object of the invention is to prov'ide'a'ri acee'ssoryof the described class having novel and advahtageousmeansfor supporting the combinedtransmitter and "receiver in any one of avariety of positiohsl I Addition'l objects .of the invention will. be app-are'ritffrdni the drawings'and from the followingspe'cihcation and claims.

In the drawings I have shown in detail a preferred embodiment of the invention, but it will be understood that various changes may be made froth theconstructionshown, and that the drawings are not to be construed [as defining or limiting thes cop of the'invention', the claimsforming a partof this specificationbeing relied upon for that purpose. L

Of the drawings"; e I

Fig. 1. is affront View or accessory embodyihg the invention. V 1 v, v Fig.,2 is a fragmentary front view showing eomeof the partsiridifierent positions.v I k I V Fig; 311s a plan view; on a reduced scale, of the supporting platform with the other parts'of the accessory omitted.

Fig; e'is a fragmentary vertical sectional view through the supporting platform and the lower p'crtionof the main post. A y Y a 5 is a view similar to Figi i but showing the main post at a higher elevation.

Fig. 6 is a side view of the accessory Fig. 7 .is an enlarged fragmentary verticalsechonai view taken along the 1in 1 1, bjflFiggfi.

Fig. 8 is a View taken along the line BQ-B of Fig. 6, the bottom plate of the horizontallyextending arm being omitted. I f

Fig; 9 is a fragmentary front view showing the stop for retaining the supporting rod-in an elevated position, as i1lustrated in Fig. 2

10 is a View taken along the line II!I0 of Fig? 9.

.Fig. 11 is a fragmentary side view of the clamp for holding the inclined laterally extehdiii'g ariii this View being taken along the line ll'l l-of Fig.1. h My i Fig. 12 is an enlarged fragmentaryflsectiohal View taken along the line i 2- !2 of 1'." V

Fig. 13 is a sectional view taken alongth eline l3l3 of Fig. 12.

Fig. 14 is an .enlargedfragriientary sectional view taken along the line i i 'lrijof Figi 1} Referring to the drawings; It represents supporting plate or platform which carries the other parts of the accessoryand which'also supportsthe base of the telephone with which the accessory is to be used. The platforniis shown as being rectangular in shape. but the shape of the plat form may be widely varied, The, platform'n ay be formed of any suitablejmaterial such as laminated wood-or molded plastic. The platforinm ay be provided with felt pads l2, [2 in ordentoavqid scratching or marr ing the desk onv which the platform may be placed. .A stud l3 maybe pro vided at the front right corner of'the platform which maybe manually engaged-for movin the entire platform. I N v Carriedby the platform .is ;a,vertical post It which serves. to support various other parts as hereinafter explained infidetaii. The post .ljis preferably cletachably. connected with;t 9, p1at .form n andas shown inv i g ithe platforrri is provided with a vertical lstu d ifi. whichisheld place by a screw .i8. I he stud Benters and fits a ceiitr'alivertical opening in'the bottom p rtion of the post; It will be seen that the postf can be readily en a edwith or d se gage from thestuclf. Preferably the stud is i hrovid 20 and the-post l4 is p'rovided I i flange 22. A pin zfl projeetsl upward iro flange 2&1 and through an'aperturein thefla g 22. The pin z l' 'sfeiives tofl locat' thepost in a predetermined position with re'spect to the stfid as and with respect to theplajtfor'm 1e. 1

Supportedon the post {5 by various paints be transmitter and'reeiver 28' trtngteiesnes r e base 39 of the telephoneisfs'fipherted dnth R tfbrm' It adjacentthepest It: Forearm of illustration the telephoi'ie' base Billie-"sh Figs. 1, 2 and Gas positiohedwith its edges parallel with the edges oi' thelilait'formfbut erase it is ordiharilyinore conv'nient for-th base-to be diagonally positioned. Prje'ierablyjthe platform is has lines 32 scribed thereon it in'dieatiiigthe most convenient location of the base with re" 'ect to the platform and for indicating the proper spacing of the base from the post M. Nermauy d scribed in detail is a heldeh'zffi' for the combined the transmitter and receiver 28 is supported by the holder 26 so long as the accessory is in place and it is not returned to engagement with the base 36.

The base 36 has the usual vertically movable button 34 which is held in its lower open-circuit position by the combined transmitter and receiver when the latter is in its originally intended position on the base, the said button being biased to its upper closed-circuit position. However, when the present accessory is in place the transmitter and receiver is supported on the holder 26 and other means must be provided for causing the movement of the button 34 to its lower open-circuit position or to its upper closed-circuit position. Mechanism for this purpose is carried by the post I4 and this mechanism will now be described.

Vertically movable on the post I4 is a slide 36 which is preferably in the form of a sleeve surrounding and fitting the post. Carried by the side or sleeve 33 is a horizontally extending arm 38 which extends over the button 34 as shown in Figs. 1, 2 and 6. Preferably the sleeve 36 'is guided for vertical movement on the post I4, relative rotative movement being prevented. As shown, the sleeve 38 is provided with a vertical interior spline 48 and the post carries a pin 42 which enters the said spline. Thus the sleeve 36 is free for vertical movement, but relative rotative movement is prevented.

Preferably the arm 38 is rotatively connected with the sleeve 36, this being desirable in order that the telephone base may be placed in different positions on the platform 10. As shown, the y main portion of the arm 38 is formed integrally with a centrally apertured hub 44. A portion of the aperture in the hub fits the post l4 and another portion fits a reduced portion of the sleeve 36.

For vertically moving the sleeve 36 and the arm 38 there is provided at least one manually movable eccentric and preferably there are two such eccentrics. As shown, the post 14 is flattened at opposite sides and a rotatable shaft 46 extends through a horizontal bearing aperture in the post. Secured to the shaft 46 are two similar eccentrics 48, 48 which engage the op-- posite flat faces of the post. Connected with the shaft 46 and the eccentrics 48, 48 is a manually operable lever 50 for turning the said shaft and eccentrics. When the lever 56 is in the upper position, as shown in Figs. 1, 6 and '7, the eccentrics are in the positions to permit the sleeve 36 and the arm 38 to move to their lowermost positions. When the lever 58 is moved to its lowermost position, as shown in Fig. 2, the eccentrics are moved to the positions shown in Fig. 2 and the sleeve 36 and the arm 38 are moved to their uppermost positions. Inasmuch as there are two eccentrics, pressure is applied to the sleeve 36 at both sides of the post. A pin 52 on the post l4 limits the movement of the lever 56, so that the sleeve 36 and the arm 38 are eitherin their lowermost positions or in their 5.:

uppermost positions. Preferably the lever 56 has notches as shown to receive the pin 52.

A spring is preferably provided for biasing the sleeve 36 and the arm 38 in the downward direction and as shown there is a coil spring 54 which surrounds the upper portion of the post l4 and which is within an upward extension of the hub 44 on the arm 38. The upper end of the spring 54 abuts against a nut 56 having threaded engagement with the upper end of the post [4.

As has been stated, the arm 38 engages the button 34 on the base of the telephone. When the lever 58 is moved to the position shown in Figs. 1, 6 and '7, the arm 38 is moved downward by gravity and by the spring 54 so as to depress the button 34 to its lower open-circuit position. When the lever 5U is moved to the position shown in Fig. 2, the sleeve 36 and the arm 38 are moved upward thus permitting the button 34 to assume its upper closed-circuit position. Thus the user of the accessory can close or open the telephone circuit at will by merely moving the lever 58. i

The base of the telephone has the usual upward projections 58, 58 at opposite sides of the button 34 and preferably the arm 38 is provided with two pairs of rollers which are so positioned that the rollers of the said pairs are at opposite sides of the said projections 56, 58. The rollers of one pair are indicated at 66, 66 and the rollers of the other pair are indicated at 62, 62, the rollers 68, 68 being at opposite sides of the front projection 58 and the rollers 62, 62 being at opposite sides of the rear projection 58. The rollers are preferably formed at least in part of rubber or equivalent material.

Preferably each two rollers 68 and 62 are rotatably mounted on a pin 64 as shown in Figs. '7 and 8, the rollers being held in place by means of screws 66, 66. The main body of the arm 38 is provided with transverse recesses 68, 68. The arm 38 includes a separate bottom plate '10 which is held in place by screws and which closes the bottoms of the recesses 68, 68. Vertical pivot pins 72 extend through the pins 64, 64 and through the main body of the arm 38 and through the bottom plate 10 thereof. Thus the pins 64, 64 which carry the rollers are free for slight oscillatory movement.

The telephone base 38 is accurately positioned on the platform l0 so that the projections 58, 58 thereof are between the pairs of rollers 60, 60 and 62, 62. The rollers constitute anti-friction means which permit the arm 38 to move freely upward or downward with respect to the base and inasmuch as the said rollers are formed at least in part of rubber or equivalent material, there is no possibility of scratching or marring the said projections on the base. Inasmuch as the rollers can oscillate they can adjust themselves to minor inaccuracies in the location of the base 38 with respect to the post M.

The telephone base shown in Fig. 1 is that of a standard telephone. Certain other telephones, as for instance those for inter-office use, have the button 34 at a slightly higher elevation. To accommodate such higher elevation of the button 34 an alternative stud 14 may be provided, as shown in Fig. 5, this stud being provided with a flange [6 which is somewhat thicker than the flange 28 shown in Figs. 1, 4, 6 and '7. The flange 16 of greater thickness holds the entire accessory at a slightly higher elevation so as to accommodate the higher elevation of the button 34.

The upper portion of the post l4 has a central cylindrical aperture therein and a vertical rod 18 accurately fits this aperture, being rotatable therein. The lower end of the rod 18 is preferably reduced in diameter, and the lower end of the aperture in the post l4 has a corresponding reduced diameter. There is thus provided a shoulder 19 which constitutes a bearing for supporting the rod when it is in its lowermost position as shown. A laterally extending arm 38 is provided which is connected at one end with the upper end of the rod 18. The arm 33 is pivotally movable relatively to the rod to positions at vertically different angles. As shown a two-part socket clamp is connected with the upper end of the rod I8, this clamp having left and right parts 80 and 82 formed of sheet metal. The left part 80 of the clamp has an offset 8 3 to which is secured a nut 86. As clearly shown in Fig. '7, the upper end of the rod 78 is reduced in diameter and is threaded for engagement with the nut 86. The extreme upper end portion of the rod '58 is peened or riveted to hold the rod 13 and the nut 86 in permanent engagement.

The laterally extending arm 88 is shown as having a ball-like enlargement as which is clamped between the two parts 8!! and 82 of the clamp. The projecting end of the arm 88 carries the holder 26 in a manner to bedescribed. A bolt 92 extends through apertures in the two parts 80 and 82 of the clamp and is engaged by a nut 94. By turning the nut 93 the bolt acts to draw the two parts 80 and 82 of the clamp toward each other so as to clamp between them the ball-like enlargement 90 of the arm 83.

A member is provided which is carried by the said rod 18 and which has therein a plurality of notches of different depths for receiving the arm 88 and for supporting it in any one of a plural ity of .positions at vertically different angles. As shown, the said ball-like enlargement 9!] of the arm is generally pear-shaped and the right part82 of the clamp constitutes the said notched member, and is provided with a plurality of notches, 9B, 96 into which the right end. of the ball-like enlargement 96 can fit. As shown, there arethree notches which are of different depths. By placing the arm 88 so that the ball-like enlargement S is seated in one or another of the notches 96, 96 the arm 88 can be held in three angularly different positions. This makes it possible for the holder 26 and the combined transmitter and reteiver 28 to be held not only in different elevations but at different angular positions to suit the convenience of the user.

Under some circumstances it may be desirable to provide for angular positions of the arm 88 additional to those which are provided by the three notches 96, 96. When this is desirable the ball-like enlargement 99 of the arm 88 may be provided with annular grooves 98, 98 and the edges of the clamp part 80 may be provided with lips I00 adapted to be seated in one or another of the grooves 98, 98. By means of the said grooves 98 and the said lips led, the ball-like enlargement 90 may be gripped and held in positions other than the positions attained by the engagement of the said ball-likeenlargement with the bottoms of the notches 9t, 95.

The holder 26 is preferably so connected with the arm 88 that it may be rotatably adjusted with respect thereto. As shown there is provided a disc I02 having a hollow hub ltd which is interiorly threaded for engagement with a threaded end portion of the arni88. A second disc IE6 is provided which normally has face to face ongagement with the disc I 92. The before-mentioned holder includes a sheet metal plate I08 and this plate is connected by means of rivet I ID with a flange I I2 formed integrally with the disc I 05. The disc I is provided with an integral stud H4 which extends through an aperture in the disc I02 and into the hollow hub H14 thereof. A coil compression spring H6 is located within the hub. 14- and surrounds the stud H4. A

screw H8 has threaded engagement with the stud H4 and the head of thescrew'servesasl an abutment for the spring I I 6'. It will be seen that the spring H6 normaly holds the disc I06 'in'engagement with the disc I92, but permits it to 'be slightly separated therefrom when-desired. After the parts have been assembled as shown in Fig. 12 a pin I20 may be inserted through the hub I04 and through the threaded end of the 'arm'88 to permanently lock the parts in assembled relationship.

The discs I E32 and IE6 are provided with means which enables them to interengage with each other so that the disc I may be. releasably. held in a variety of positions of rotative adjustment with respect to the disc I02. As .shownin.,Fig.l3, the disc I02 has anannular series of, holes- I22, I22 therein and the disc I66 carriesa pin: I 24 adapted to enter any one of the holes- I22, I22. It will be seen that the angular position of the holder 26 with respect to the arm 88 cambe changed by moving the holder'toward the right in opposition to the spring H5, thuswithdrawing the pin I26 from the hole I22 in the -discl02. Then the holder can be rotated with respect to the arm 88 and released, the pin I24 entering another hole I22 in the disc I62. Thus the holder is normally held against relative rotation, but can be angularly adjusted as desired.

The holder 26 includes not only the beforementioned plate IE8 but also two clips I26, I 28 which are adapted to receive and hold the combined transmitter and receiver 28. The clips I 26, I26 may be varied as to details but 'I preferto provide clips as shown in detail in Fig. 14. As'

shown, each clip comprises a generally U-shaped metallic spring I28 secured to theplate I88 by means of a rivet I35. Each clip also includes a generally U-shaped body I 32 of yieldable resilient material such as rubber, the body I32 bein'gwithin the confines of the spring I28. The interior of the U-shaped body I32 is shaped to substantially lit the corresponding portion of the cornbined transmitter and receiver. When the'tra'nsmitter and receiver is to be put in place on the holder it is pushed toward the plate iii-8, the clips spreading sufiiciently to permit the said transmitter and receiver to enter the interior opening in the base I32 of rubber or equivalent material. Thus the transmitter and receiver is firmly held in place and is engaged only by the the bodies of rubber or equivalent material, thus avoiding any possibility of scratchingcr marring the said transmitter and receiver.

As has beenistated, the arm 88 may be angularly adjusted vertically, thus changing. the height rof the holder- 26 and oft-he transmitter and receiver 28. However, the adjustment of the arm 88 is depended upon primarily for changing the angle of the transmitter and receiver rather than for changing the elevation thereof. The elevation of the. transmitter and receiver may be changed by vertically moving the rod 18' with respect to the post I4. Therod i8 hasv twocor more annular grooves I34, I34 therein and-the rod 18 can be raised to locate anyone of the said grooves I34; I3d just above the top ofth'e'nut 55. With the rod 18 so raised, a stop I35, as shown in detail in Figs. 9 and 1G, is engagedwith the said rod at the last said groove thereof. As shown, the stop I35 comprises a lower plate I38 having a notch therein, and the notched portion ofthe said plate I38'is adapted to enter the an nular groove in the rod 18, the ,said plate- I38 resting on the nutEE as shown in 9. The

stop I36 also includes a spring I40 which embraces the rod I8 and is shaped to engage the rod to resiliently hold the stop in place. The stop may also comprise a second plate I42 at t -e top for covering the spring I40.

Fig. 7 shows the rod I8 in its lowermost position, it being supported on the shoulder at I9. The rod can be raised to position either of the grooves I34, I34 adjacent the top of the nut 56, and the stop I36 can be snapped in place. Fig. 2 shows the rod 18 raised and shows the stop I36 engaged with the rod at the lower groove 34 therein. The rod I8 can be held at any one of three elevations, and the number of positions may be increased by increasing the number of annular grooves I34, I34.

Preferably the rod I8 is provided with an additional annular groove near the top thereof with which the stop I36 can be engaged when the rod is in its lowermost position as shown in Fig. 7. When the stop is in the position shown in Fig. 7 it has no function, but it is retained in place so that it will not be lost.

The usual cord I44, connecting the transmitter and receiver with the base, may be held by a hook I46 carried by the arm 88. Thus the cord is maintained in a convenient elevated position.

From the foregoing description it will be apparent that the transmitter and receiver 23 may be held in any position that is most convenient for the user. It may be adjusted angularly in one direction by changing the position of the arm 88 with respect to the socket clamp and it may be angularly adjusted in another direction by changing the position of the disc I98 with respect to the disc I02. The elevation may be changed by raising the rod I8 and putting the stop I35 in place at one of the grooves I34, I34.

The transmitter and. receiver can at all times be freely rotated about the axis of the rod I8 and the post I4.

With the transmitter and receiver adjusted to the most convenient position, the user has his hands free at all times for handling papers and for making notes and the like. When the telephone is not in use the lever 50 is in its upper position as shown in Fig. 1. Whenever the telephone is to be used the user merely moves the lever 58 to its lower position as shown in Fig. 2, thus opening the telephone circuit so that the desired number can be dialed in the usual manner. Upon completion of use the lever c is restored to the position shown in Fig. 1.

What I claim is:

1. In an accessory for use with a telephone, the combination of a vertical post, means for attaching the post to a horizontal support for the base of a telephone which base has a vertically movable button for opening and closing the telephone circuit, a holder for a combined telephone transmitter and receiver, connections between the upper end of the post and the holder for supporting the latter on the former, a vertically movable sleeve surrounding the post below the said upper end thereof which sleeve carries a horizontally extending arm adapted to engage the movable button on the telephone base, a spring for moving the sleeve and arm downward to thereby move the button to its lower open-circuit position, and a manually movable eccentric carried by the post below the sleeve for engaging the sleeve to move it and the arm upward in opposition to the spring so as to release the button 8 and permit it to move to its upper closed-circuit position.

2. An accessory as set forth in claim 1, wherein the post has a transverse hole below the sleeve, wherein a rotatable shaft is located in the hole, wherein the shaft carries at least one eccentric which engages the bottom of the sleeve, wherein a manually operable lever is connected with the said shaft and eccentric for rotating them, and wherein the post carries a stop pin engageable by the lever for limiting the extent of rotation of the shaft and eccentric.

3. An accessory as set forth in claim 1, wherein the post has a transverse hole below the sleeve, wherein a rotatable shaft is located in the hole, wherein the shaft carries two similar eccentrics which engage the bottom of the sleeve at opposite sides of the past, and wherein a manually operable lever is connected with the said shaft and eccentrics for rotating them.

4. An accessory as set forth in claim 1, wherein means is provided for guiding the sleeve for vertical movement and for preventing rotative movement thereof with respect to the post, and wherein the arm is rotatably movable relatively to the sleeve about the vertical axis thereof.

5. In an accessory for use with a telephone, the combination of a vertical post, means for attaching the post to a horizontal support for the base of a telephone which base has a vertically movable button for opening and closing the telephone circuit and which base also has two similar upward projections at opposite sides of the button, a holder for a combined telephone transmitter and receiver, connections between the upper end of the post and the holder for supporting the latter on the former, a vertically movable slide on the post below the said upper end thereof which slide carries a horizontally extending arm adapted to engage the movable button on the telephone base, manually operable means for causing downward and upward movements of the slide and arm to move the button to its lower opencircuit position or to its upper closed-circuit position, and two pairs of rollers on the arm so positioned that the rollers of the two pairs are at opposite sides of the respective upward projections on the telephone base.

6. An accessory a set forth in claim 5, wherein there are two horizontal pins connected between their ends to the arm for limited movement about vertical axes, and wherein the rollers are mounted on the said pins.

7. In an accessory for use with a telephone, the combination of a vertical straight post having a central vertical cylindrical hole in the upper portion thereof, means for attaching the post to a horizontal support for the base of a telephone which base has a vertically movable button for opening and closing the telephone circuit, a vertically movable slide on the post below the said upper end thereof which slide carries a horizontally extending arm adapted to engage the movable button on the telephone base, manually operable means for causing downward and upward movements of the slide and arm to move the button to its lower open-circuit position or to its upper closed-circuit position, a rod fitting the said hole in the post and rotatable therein which rod extends upward beyond the post, a holder for a combined telephone transmitter and receiver, and connections between the upper end of the rod and the holder for supporting the latter on the former.

8. An accessory as set forth in claim 7, wherein 9 the rod is vertically adjustable in the hole in the post, and wherein a stop is connectible with the rod to support it on the post in a position above its lowermost position.

9. An accessory as set forth in claim '7, wherein the rod is provided with a plurality of annular grooves, and wherein a stop is releasably connectible with the rod at any one of the said grooves therein for supporting the rod on the post in any one of a plurality of positions above its lowermost position.

10. In an accessory for use with a telephone, the combination of vertical straight post having a central vertical cylindrical hole in the upper portion thereof, means for attaching the post to a horizontal support for the base of a telephone which base has a vertically movable button for opening and closing the telephone circuit, a vertically movable slide on the post below the said upper end thereof which slide carries a horizontally extending arm adapted to engage the movable button on the telephone base, manually operable means for causing downward and upward movements of the slide and arm to move the button to its lower open-circuit position or to its upper closed-circuit position, a rod fitting the said hole in the post and rotatable therein which rod extends upward beyond the post, an arm connected at one end with the upper end of the said rod and pivotally movable relatively to the said rod to positions at vertically diiferent angles, a member carried by the said rod and having therein a plurality of notches of diiferent depths for receiving the arm and for supporting it in any one of a plurality of positions at vertically difierent angles, and a holder for a combined telephone transmitter and receiver carried by the opposite end of the last said arm.

11. In an accessory for use with a telephone, the combination of a vertical straight post having a central vertical cylindrical hole in the upper portion thereof, means for attaching the post to a horizontal support for the base of a telephone which base has a vertically movable button for I opening and closing the telephone circuit, a vertically movable slide on the post below the said upper end thereof which slide carries a horizontally extending arm adapted to engage the movable button on the telephone base, manually operable means for causing downward and upward movements of the slide and arm to move the button to its lower open-circuit position or to its upper closed-circuit position, a rod fitting the said hole in the post and rotatable therein which rod extends upward beyond the post, a two-part socket clamp carried by the rod at the upper end thereof, one of the parts of the clamp being provided with a plurality of notches therein having different depths, an arm having a ball-like enlargement at one end thereof and located between the parts of the clamp which enlargement is adjustable to permit a portion of the arm to lie within any one of the said notches so that the last said arm is supported at any one of a plurality of angularly difierent positions, and a holder for a combined telephone transmitter and receiver carried by the opposite end of the last said arm.

12. An accessory as set forth in claim 11, wherein the ball-like enlargement of the second said arm has a plurality of annular grooves therein, and wherein one of the parts of the clamp has lips for entering the said annular grooves to hold the ball-like enlargement and the second said arm in a selected position.

13. In an accessory for use with a telephone, the combination of a vertical straight post having a central vertical cylindrical hole in the upper portion thereof, means for attaching the post to a horizontal support for the base of a telephone which base has a vertically movable button for opening and closing the telephone circuit, a vertically movable slide on the post below the said upper end thereof which slide carries a horizontally extending arm adapted to engage the movable button on the telephone base, manually 0perable means for causing downward and upward movements of the slide and arm to move the button to its lower open-circuit position or to its upper closed-circuit position, a rod fitting the said hole in the post and rotatable therein which rod extends upward beyond the post, an arm connected with the upper end of the rod and extending laterally therefrom, a holder for a combined telephone transmitter and receiver, and a connection between the holder and the projecting end of the last said arm comprising a member secured to the arm and a mating member secured to the holder and rotatable about the axis of the arm which members have interengaging portions tending when engaged to prevent rotation of the holder relatively to the last said arm and the said connection also comprising a spring normally holding the said members in engagement and yieldable to permit them to be separated sufficiently to enable the holder to be rotatively adjusted with respect to the last said arm.

SANFORD C. CI'IESICK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 564,034 Snow July 14, 1896 1,847,649 Hazard Mar. 1, 1932 2,260,703 Daly Oct. 28, 1941 2,310,032 Mathieson Feb. 2. 1943 

